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ancodien
2 năm trước
Câu 7: Đưa một thanh thủy tinh đã nhiễm điện lại gần một dòng nước nhỏ đang chảy từ vòi nước. Quan sát dòng nước khi chưa đưa thanh thủy tinh và sau khi đưa thanh thủy tinh lại gần nó. Hãy nêu hiện tượng và giải thích ?
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